diff --git a/types/index.d.ts b/types/index.d.ts
index 43835584..32afff4b 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -1,7 +1,7 @@
 import React from 'react';
 import { IconProps } from '@material-ui/core/Icon';
 import SvgIcon from '@material-ui/core/SvgIcon';
-import { OnHandlers } from './helpers';
+import { OnHandlers } from './helper.d.ts';
 
 declare module '@material-table/core/exporters' {
   export function ExportCsv(
@@ -287,33 +287,42 @@ export const MTableToolbar: (props: any) => React.ReactElement<any>;
 export const MTable: (props: any) => React.ReactElement<any>;
 
 export interface Icons {
-  Add?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
-  Check?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
-  Clear?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
-  Delete?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
-  DetailPanel?: React.ForwardRefExoticComponent<any> & 
+  Add?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  Edit?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
-  Export?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
-  Filter?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
-  FirstPage?: React.ForwardRefExoticComponent<any> & 
+  Check?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  SortArrow?: React.ForwardRefExoticComponent<any> & 
+  Clear?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  LastPage?: React.ForwardRefExoticComponent<any> & 
+  Delete?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  NextPage?: React.ForwardRefExoticComponent<any> & 
+  DetailPanel?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  PreviousPage?: React.ForwardRefExoticComponent<any> & 
+  Edit?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  ResetSearch?: React.ForwardRefExoticComponent<any> & 
+  Export?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  Search?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
-  ThirdStateCheck?: React.ForwardRefExoticComponent<any> & 
+  Filter?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  ViewColumn?: React.ForwardRefExoticComponent<any> & 
+  FirstPage?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  SortArrow?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  LastPage?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  NextPage?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  PreviousPage?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  ResetSearch?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  Search?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  ThirdStateCheck?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  ViewColumn?: React.ForwardRefExoticComponent<any> &
+    React.RefAttributes<SVGSVGElement>;
+  Retry?: React.ForwardRefExoticComponent<any> &
     React.RefAttributes<SVGSVGElement>;
-  Retry?: React.ForwardRefExoticComponent<any> & React.RefAttributes<SVGSVGElement>;
 }
 
 export interface Options<RowData extends object> {